
 class BirthDate {
	private int day;
	private int month;
	private int year;
	public BirthDate(int d , int m , int y){
		day = d;
		month = m;
		year = y;
	}
	
	public void setDay(int d){
		day = d;
	}
	
	public void setMonth(int m){
		month = m;
	}
	
	public void setYear(int y){
		year = y;
	}
	
	public int getDay(){
		return day;
	}
	
	public int getMonth(){
		return month;
	}
	
	public int getYear(){
		return year;
	}
	
	public void display(){
		System.out.println(day + "-" + month + "-" + year);
		
	}	
	//public static void main(String[] args) {}
}

public class BirthText{
	public static void main (String args[]){
		BirthText text = new BirthText();
		int date = 9;
		BirthDate d1 = new BirthDate(7,7,1970);
		BirthDate d2 = new BirthDate(1,1,2000);
		text.change1(date);
		text.change2(d1);
		text.change3(d2);
		System.out.println("date = " + date);
		d1.display();
		d2.display();
	}
	
	public void change1(int i){
		i=1234;
	}`
	
	public void change2(BirthDate b){
		b = new BirthDate(22,2,2004);
	}
	
	public void change3(BirthDate b){
		b.setDay(22);
	}
}
